Hatch plug



Original Filed Oct. 26, 1949 Z-SHEETS-SHEET 1 Aug. 19, 1952 K, T, N STROM v 2,607,302

HATCH PLUG A v INVENTOR. E

V BY A4; 7' #767790 \ko 0 $9 o 0 MW if w 19, 1952 K. T. NYSTROM 2,607,302

HATCH PLUG 2 SHEETSQSHEET 2 Original Filed Oct. 26, 1949 INVENTOR.

M 0 y N T L n H K M Patented Aug. 19, 1952 HATCH PLUG v v U Karl T. Nystrom, Chicago, Ill., assignor to Stand- 'Z l ard Railway Equipment ManufacturingCom- I pany, Chicago, Ill., a corporation of Delaware Original application October 26, 1949, Serial No. I 123,758, now Patent No. 2,565,706, dated August 28, 1951. Divided and this 1951,- Serial No. 224,241

6 Claims. (Cl. 105-377) This invention relates to railway refrigerator cars wherein a plurality of hatchways are provided for servicing the car bunkers with ice or other form of refrigerant. More particularly the invention relates to an improved form of hatch plug'forv closing said hatchways.

The ordinary hatch plugs for useWith such refrigerator car hatchways are usually composed of spaced inner and outer pan shaped metal portions with insulation therebetween and weigh, for an average sized opening, approximately one hundred and thirty-five pounds. This .is considerable weight for one man to handle when lifting the plugs, and, consequently, it is desired that these plugs be made as light weight as possible. A hatch plug made in accordance with my hereinafter described design is roughly one hundred pounds lighter than the standard hatch plug now in use and saves an appreciable amount in the total weight of the finished car, and com- 1prises the principal object of the present invenion.

The subject matter of this application is divided out of copending application Serial No. 123,758, filed October 26, 1949, of which application I was originally an applicant, now Patent No. 2,565,706,dated August 28,1951.

Other objects and advantages of the invention will appear in the following descriptionthereof.

Referring now to the accompanying drawing forming part of this application and wherein like reference characters indicate like parts:

Fig. 1 is a plan view of the improved roof sheet having the hatch frames integrally formed therein and with a light weight plug applied to one of said hatch frames.

Fig. 2 is a section on line 22, Fig. 1, omitting the hatch plugs.

Fig. 3 is an enlarged section on line 33, Fig. 1.

Fig. 4 is a perspective view of one of the improved hatch plugs.

The invention is shown as embodied in a car having metal side plates of substantially Z-shaped cross section, which extend from end to end of the car and have a portion l disposed substantially horizontally to rest upon and be secured to the tops of lonigtudinally spaced vertical side posts (not shown) of the car. From the outer edges of said portion I depends a flange 2 which overlaps the upper outer edge of said posts, and at the inner edge of said portion I an upstanding flange 3 is provided, it having a laterally turned reflange 4 extending in the plane of the roof of the car.

The invention has to do with those sheets of a application May '2,

2" Q railway car roof wherein hatch frames are located, and consequentlyv these particular sheets of a railway car roof only willbe described,

These hatch roof sheets spanthe car from side plate to side plate, and conform to thegeneral shape of the car roof having arid'geportion 5 transversely thereof conforming to the ridge 1 of the roof, and the roof sheet. slopes 'Ldownwardly on opposite sides of saidridge portion 5 to the side plates, and the ends thereof rest upon and are secured to the lateral flange d ofsaid side plateby a row of rivets 6; Tliesideof the hatch sheet adjacent the end of the car formed'with a down turned flange 1 'which" i s*a dapted to overlap and be secured to the upper-margin 9 of the end wall and be secured thereto, a's'is common, and the other side ofis aidshe'et'is formed with an upstanding flangejf'adapt'ed to abut a similar flange of an adjacent lsheetfland be covered with a seam cap, secu ring said flanges and caps together, all as'is common in theart.

The hatch frames are integrally'formed in the roof sheet and are in theform' of anupstanding boss having downwardly and outwardly sloping outside walls l2 and downwardlyf'andinwardly sloping inside walls l3 spaced-'from' the outside Walls, said inside and outside walls being connected by a shoulder or web"-l'4fwhich-"s1opes outwardly and upwardly andformsaseat for-the hereinafter described cover or plug for said hatch opening. j; x l

The hatch plug shownforuse with said hatch frames comprises a pan shaped bottom member l5 having rounded corners and outwardly diverging side walls IS with outturned marginal flanges [1 which terminate into downturned reflanges [8. The top member of the plug comprises a sheet having a flat body portion [9 spanning across the bottom member between the outer edges of flanges l1, and the outer flanged margin 20 of said portion I9 is turned down over and rests flatly against reflange l8 and is bonded thereto. These two members are formed of plastic material which is very durable and is not aifected by salt, acid, alkali, soot, cinders, or atmospheric temperatures. A metallic stiffening angle 2| is provided on the under surface of the body portion l9 of the top member, said angle 2| being of U or horse-shoe shape so as to extend around and reinforce the margins of three sides of said portion l9 and one flange 22 of said angle 2| being disposed flatwise against the inner surface of the top member l9. Spaced registering holes are provided through said flange 22 and the adjacent body portion l9, through which extend angle 24 and the body IQ of said top member;

similar to bolts 23. Extending through flanges l8 and 20 in opposite sides of the plug are also provided bolts 26 and 21-a1soforapplication of fixtures for securing the plug. to the hatch'frame and adjacent car roof. The space between the bottom and'top I9 members of: the, plug is filled with a suitable insulating material, indicated at 30, and a gasket 3| is bonded' to "the under side of flange I! to seat upon flange Id of the hatch frame.

Ordinary hatch plug hinges 32 are secured along one side, of thelplug to hingedly secure the plug. to'the. roof, the'jstrapportion of said hinges occurring directly.overthe endsof flanges 22 and being secured thereto certain of bolts 23, asshown in Figs}; and l. Along the opposite side of the plug are secured'the stops 33, handle 34, and: lock 35. .each being positioned over the reinforcing angles. 2-1, .ori'24. and secured thereto by other bolts'23; also, asshown iii-Figs: land 4.

With the exception; of the fixturestheentire hatch plug is constructedlofllight weight; strong, durable, plastic material whichreduces the. weight of such aplug-to' approximately one-thirldgthat of the conventional. plugfconst'ructed of steel, without sacrificing. any utility thereof.

1. A hatch, plug for. a railway car roofysaid plug consisting-only lof aplastic .coye'r portion having an outstandingfrim flang'e atfthe top thereof, metallic members securedtd' thelunder surface of;the cover portion. to v reinforce said cover and forma base for securinghin'ge. and cover fixtures along opposite sides of said .co'ver portion, a plastic pan shaped-bottom. portion having corresponding rim flanges; registering with andsealed; to -.the rim flanges of. the coyer portion, and insulationlmaterial filling the space between said; cover and bottom. portion.v

2. A hatch plug-for a railway .car 'r'oof, a plastic pan shaped body portion having, an outwardly a peripheral margin sealed to said rim flange, and metallic members secured to the under surface of said cover member to reinforce said cover member and form a base for securing hinge and cover fixtures thereto. 1, H v

' 3. A hatch plug for a; railway carfroof, a plastic pan shaped body portion having an outwardly extending rim flange at the top only thereof, insulating material within said body portion, a plastic cover member having a peripheral margin conforming to the shape of said rim flange and sealed thereto, and metallic members secured to extending rim flange at the top only thereof, in-

sulating material within saidbody portion, amasticcover member for said-body portion having the under surface of said cover member and extending about the margins thereof to reinforce saidcover member and form a base for securing hinge and cover fixtures along opposite sides of .sa d cover me b r- 4. A hatch plug for a railway car roof, a plastic pan shaped body portion having an outwardly extending rim flange at the top only thereof, a sealing gasket secured to the under surface of said rim flange entirely about said plug; insulating material within said body portion,.a plastic cover member for said body portion. having a peripheral margin. sealed to said rim flange, and metallic members.jsecuredv to the under surface of said. cover member. to; reinforce said cover member. and forma base for securing hinge and cover-fixtures thereto.

5.. A hatch. plug for. a railway car roof, said plug consistingof .a plasticpan shaped body portion having sides and bottom and insulating materialwithin said body portion, a plastic cover member for said'body portion having a marginal rim flange sealed to the upper edges of said sides, and metallic members secured toitheunder surface of said cover memberto reinforce said cover member and form a base for securing hinge and cover fixtures thereto. I

p 6. A hatch plug; for a. railway carroof, said plug consisting of a-plasticpan shaped body portion having an outstanding rim flange at the top only thereof, insulating material within said body portion, a plastic cover. member for said body portion sealed about its-edges tosaid'rim flange, and metallic members secured to the under sur face .of said cover memberto reinforce said cover No references cited. I 

